%0 Journal Article %A Acker, Andrew F. %A Lancaster, Kirk E. %T Qualitative behavior of axial-symmetric solutions of elliptic free boundary problems %J Electronic journal of differential equations %D 1997 %V 1997 %U http://geodesic.mathdoc.fr/item/EJDE_1997__1997__a12/ %G en %F EJDE_1997__1997__a12